Lamp holder and adjuster.



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H. E. PRDCUNIER. LAMP HOLDER AND ADJUSTER. APPLICATION FILED muzs. 1911.

Patented Jan. 22, 1918.

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. H. E. PBOCUNIER.

LAMP HOLDER AND ADJUSTER.

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Patented Jan. 22,1918.

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a citizen of the or horizontal position.

HENRY E. PBOCUNIER, OF CHICAGO, ILLINOIS.

LAMP HOLDER AND ADJUSTER.

Specification of Letters Patent.

Patented Jan. 22, 1918.

Application filed January 25, 1917. Serial No. 144,394.

To all whom it may concern:

Be it known that 1, Henry E. Pnocoxmn, United States, residing at. Chicago, in the county of Cook and State of Illll'lOlS, have invented certain new and useful Improvements in Lamp Holders and Adjusters, of which the following is a specification.

One of the objects of my invention is to rovide' a lamp-socket holding means whereby to adjust the position of an incandescent lamp axially and universally in angularly dis osed positions.

Knother object of my invention is to pro vide a lamp holding device having a reflector-attaching part whereby to attach and hold the reflector in association therewith and whereby the reflector may be bodily ad-' justed in a. vertical plane with the lamp, roviding. other means for ad usting the amp axially of the reflector and laterally thereofto locate the lamp in the true focal plane of or most advantageous position in i the reflector.

Other and further objects of my invention will become readig apparent, to'per sons skilled in the art, om a consideration of the followingl description when taken in conjunctionwit the drawings, whereinz-- Figure 1 is an elevation of the lamp holder, adjuster and reflector, showing parts in section.

Fig. 2 is an elevation of the upper part ofthe device show ng the lamp in the axial Fig. 3 is a central section of thesame portion of -the device showing the lamp in an angular position, with respect to the axis.

"Fig. 4 is a transverse section taken on line 4-4.of Fig. 1. f

.Fig. 5 is a. similar sectioptaken on line Q 0f 1'- s Fig. 6 is a similar section taken on line Terr-f6 Of 1.

' I In all the views thesame reference char- .ma eters are. employed to indicate similar aparts. r

n-I'My. lamp adjusting device is especially adapted for use .withhead lights, for locodtives, and other-isimilar light projectors.

' may be used in headlights or projectors of steam hoats,xsearch.l1ghts or thesmaller vi lamps of automobiles emfiployed *tonllumi nate the roadway over w oh. the vehicle is traveling. q

The, prime object sought is to provide a stable, practical means whereby to adjust the position of the lamp'within its associate reflector, or projector, by conveniently operable means located outside of the projector but preferably within the casing of such structure and so simple and certain in operation that its manipulation ma be effected by the use of one hand while t 1e oper stop is looking into the opposite end of the reflector to observe the adjusted location of the lamp and the effect of the adjustment.

When a lamp is out of true focal position of the urabolic reflector in a head light, especially those used upon locomotives, it requires considerable skill of the engineer or operator, to maintain his upright positionon the moving locomotive, while adjusting the osition or the lamp unless the lamp adjustlng device has such advantageous features as may render itespeeially adaptable for such purposes.

In the-exemplified. illustration of my invention 10 represents the-base plate upon which the'lamp adjuster 11 and the projector 12 are mounted. A threaded stem or pipe 13 is connected to a socket part 14: of the lamp holder and adjuster and is a means by which it is supported upon the base.

The lower portion 15 is screw threaded, and over the threaded end a washer 16 is passed, the upper surface of which normally restsin eontactwith an adjusting. nut 17. A similahnut 18 is located on the other side of the 'base plate 10 and is held in adjusted position by the check nut 19. By this meansthe lamp adjuster and the reflector 12 may be vertically adjusted with respect to the baso- 10. A casing member 26, of which the socket 14 is an integral part is-provided with radially projecting perforated cars 21 and 22. Its front endis provided with an with d rt annularjgr-Oove 29.; A not 30 has screw threaded engagementwith the threzided portion of the ide 28 and overlies'the outerportion of t 1e cylinder. 27. The not outwardly extending,

holder .28 and is provided is also provided with an annular groove 31, which registers with the groove 29 when the nut is in place. A fiat spring 32, substantially semi-circular in form and curved on shorter radii than the cylinder 27, is slotted at its terminal ends, as at 33 and 34, and is held loosely in lace by studs or pins that pass throu h t e respective slots and which are secured to the cylindrical portion 27. The spring 32, in its normal, radial position is partly in the groove 29 and partly 1n the groove 31, serving as a gib, so that so long as the spring is in this position, in the two grooves, the nut 30 has no axial movement on the cylinder 27. The center of the spring is provided with a slight projection 36 which may be produced by indenting the inner sur- V face thereof, which enters perforations 37 'made through the walls of the nut at freuent intervals. Now it will be manifest t at'wh'en the nut 30 is rotated to the right, for example, the socket-holder and guide 28 will be moved outwardly by the threaded engagement of the nut 30 with the guide 28 and as ,shown in dotted lines in Fig. 1 and when the direction of rotation of the nut is reversed the guides will be moved inwardly, By this means the lamp 38, which is supported-.in-a lampsoeket 39 may thus be ad- 'usted to any axial position withi'n the capability of the adjusting device. When the -nut has been rotated to the proper extent the projection 36 will enter the inner edge of one of the perforations 37 and produce friction' tending to prevent the nut from being rotated. To remove the nut from the cylinder 27 it is only necessary to place a small instrument through one of the perforations 37 and press down, toward the axis, upon the apex of the spring 32, preferably in the region of the projection 36, thereby preshin the spring wholly into the groove 29, whicfi will permit the nut and the socket guide 28 to be removed from the casing. The nut may-now be unscrewed'from the guide 28 and the latter may be taken out from either end of the casing. The guide 28 is provided with a rear perforate wall 28' through which I a headed bushing 40 may pass and-which is 50- screw threaded into the terminal threaded end 42 of the socket. The flange of the bushing 40 engages the wall 28' to hold the socket in place. A cushion 43, such as a strip of chamois, leather, or the like, may surround hehedy p rt of he lamp so t 39 to a the shockdue to impact that may be produced by the rapidly moving train, or from other causes which would otherwise affect the socket or lamp, connected thereto. The socket 39 is referably provided with a flange 41. whic may engage the inner end 43 of the guide 28. When the bushing 40 is screwed up it will hold the socket and, guide in true axial positions. Wires 44 and 45- convey the current to the lamp through the socket. A locking member 46 of the twopart casing 20 for seeuring'the spherical rustum 26 in connection with the part 25 v of the casing, in ad'usted position, consists of a rin having ra ially projecting ears 47 and 48 or cooperation with the ears 21 and 22 of the part 20. Screws 49 and 50 ass through clearance holes in ears 47 an 48 tivel'y fixed threaded stud 53 that projects i from the socket 14. A thumb nut 54 is threaded on to the stud 53 and bears against the perforate end of the projection 51, which, together with the screws 49 and 50, serve to frictionally hold the spherical member 26 in the fixed position in which it has been adjusted between the casing members '20 and 46. .The inner surface of thering 46 is provid'ed with an annular groove 55, within which is contained friction members consisting of a spring wire 56, which is bent into a more or less rectangular form, having parts 57 yieldingly resting upon the outside surface of the spherical member 26. The object of this spring member is to exert a slight, temporary frictional resistance to prevent movement of the spherical member 26, so that the operator may remove his hand from the nut 30, after he has adjusted the lamp to the proper angular position, and

, tighten-the thumb screw 54 to hold the easmg members in contact with the universally adjustable member 26 to positively maintain it in the position in which it has been previously adjusted. Without the spring 56, or some substantial'equivalent, the parts would not remain in adjusted position after the operat'ors hand had become disengaged from the rear projecting portion of the device, such as the nut 30, preliminarily to tightening the nut 54 on the stud 53, to positively hold the parts in the positions in which he had placed them. It is of course manifest that other means thanthe contorted wire ring 56 maybe employed for this purpose, but I have found this -to be a very convenient and cheaply produced expedient to accomplish the desired result.

A bushing 60, provided with a flange 61,

is a means for holding the lamp adjusting device in association with shegfreflector, or pro ector 12. The cylindrical'portion of the bushlng-passes through a perforation made through the projector and into the front end of the casing member 20, with the flange 61 of the bushing overlying the edge of'the opening in the projector. The bushing 60 is held in place by means of a spring 62 which lies in an annular oove 63, which is provided with termina s that are bent into returned ends, as at 64 and 65. The extreme ends 66 and 67, respectively, are

the projector and then radially so as to with draw the radial ends 6767 out of the respective slots in the bushing, thereby permit ting. the bushin to slide out of the opening in the front en of the member 20, separating the lamp holding device from the projector. y

Before this is done, of course, the clamping or locking member 46 has been removed, and the socket and the guide 26 and 28 have been also removed from the interior of the casing member 20.

While I have herein shown a. single embodiment, of my invention, for thevpurpose of clear disclosure, it is manifest, to persons skilled in the art that many changes may be made in the arrangement, configuration and disposition of the parts within the scope of the appended claims.

l'laving described my ini ention, what I claim ls:-

1. A lamp holder and adiuster comprising a two-part casing; an angularly mljustable collar men'lber having a spherical frustuni part, between said casing members and a.

cylindrical part projecting theretroin; an axially movable socket holding member, within said angularly adjustable collar member; a threaded nut on said cylindrical part to axially move said socket and bolder, and means to clamp the casing members in contact with said frustum to hold-the socketiin adjusted angular position.

A lamp holder and adjuster comprising (plane transverse to its runs; an singularly a Justable member comprising a spherical frustum a two-part casing; an angulariy adjustable memhen having a spherical frustum part between said casing members and acylindrieal part projecting therefrom; a yielding trierion-prmlucing member, interposed be tween said frustum and casing, to temporar ly hold the former in place; an axially movable socket'lmldiug member in said adnstable member; a threaded nut on said cylindrical part to axially move said socket.

and holder; means to prevent axial movement of the nut; and means to clamp the casing members in cohtact with said frnstum to positively hold thesocket in adjusted angular position. i u 3. Alamp holder and pro1ector comprising a two part casing divided in it contained between said members, anda pro ecting cylinder; a rotatable nut, axiallytixed on said cylinder; an axially movable socket-guard provided with a threaded cy-..

lindrical part engaged by said nut; effictioncheck to yielding! y hold thenut against rotation and means to clamp said casing members into contact with said frustum to hold the latter in adjusted position.

4. A lamp holder and adjuster comprising a two-part casing; a universally-adjustable socket-holder therein; means to move the socket and holder axially of the casing;

means to tighten the two part casing on t holder to retain it in its adjusted an ular position; a bushing in the'inner .end 0 said casing having an annular, radial'l extending means to engagea reflector an yielding means in said casing to hold the bushing in place.

In testimony whereof I hereuntb set my hnndlin the presence of two subscribing wit nesses.

HENRY E. PROCUNIER. In the presence of-- STANLEY Coon, Mam F. ALLEN. 

